Sold exclusively at Disney's Star Wars: Galaxy's Edge theme parks.
The bottle is shaped after a thermal detonator, an explosive device Leia (in Boushh disguise) used in negotiating her way into Jabba the Hutt's palace in Star Wars: Episode VI - Return of the Jedi.
The label is printed in Aurebesh, a language used in the Star Wars Universe, and reads "Diet Coke".